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models.py
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models.py
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from django.db import models
class Item(models.Model):
name = models.CharField(max_length=100, blank=True)
parent = models.ForeignKey(
"Item", on_delete=models.SET_NULL, null=True, related_name="children"
)
item = models.ForeignKey("Item", on_delete=models.SET_NULL, null=True)
value = models.IntegerField(default=10)
item_type = "simple"
@property
def title(self):
return self.name
@property
def unoptimized_title(self):
return self.title
def all_children(self):
return self.children.all()
class DetailedItem(Item):
detail = models.TextField(null=True)
item_type = models.CharField(max_length=100, null=True)
class RelatedItem(Item):
related_items = models.ManyToManyField(Item)
class RelatedOneToManyItem(models.Model):
name = models.CharField(max_length=100, blank=True)
item = models.ForeignKey(Item, on_delete=models.PROTECT, related_name="otm_items")
class ExtraDetailedItem(DetailedItem):
extra_detail = models.TextField()
class UnrelatedModel(models.Model):
detail = models.TextField(null=True)
class SomeOtherItem(models.Model):
name = models.CharField(max_length=100, blank=True)
class OtherItem(models.Model):
name = models.CharField(max_length=100, blank=True)
some_other_item = models.ForeignKey(
"SomeOtherItem", on_delete=models.PROTECT, null=False
)